build(deps): bump FluentAssertions

Bumps [FluentAssertions](https://github.com/fluentassertions/fluentassertions) from 6.12.0 to 6.12.1.
- [Release notes](https://github.com/fluentassertions/fluentassertions/releases)
- [Changelog](https://github.com/fluentassertions/fluentassertions/blob/develop/AcceptApiChanges.ps1)
- [Commits](fluentassertions/fluentassertions@6.12.0...6.12.1)

---
updated-dependencies:
- dependency-name: FluentAssertions
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

JsonPatchDocumentExtensionDataAdapter/UnitTest/UnitTest.csproj

@@ -11,7 +11,7 @@
 
     <ItemGroup>
         <PackageReference Include="coverlet.collector" Version="6.0.2"/>
-        <PackageReference Include="FluentAssertions" Version="6.12.0" />
+        <PackageReference Include="FluentAssertions" Version="6.12.1" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0"/>
         <PackageReference Include="MSTest.TestAdapter" Version="3.1.1"/>
         <PackageReference Include="MSTest.TestFramework" Version="3.1.1"/>